A
abbotsman
Hello,
my boiler is a Vaillant ecoMax 622/2E, installed in 2004 by
a professional registered plumber. Faultless running up until now.
On 21st Dec it came up with a F.23 fault, reading service manual
this says
Meaning: Water level low
Temperature range too wide
Cause: Pump obstructed, pump running at lower capacity
Air in appliance, system pressure too low
flow and backflow NTC reversed.
On 21st Dec I drained and refilled, bleed system - water was very black
despite inhibitor. Boiler started and worked fine... until today (11th Jan).
Now have F.23 fault again. Restarted the boiler, ran for a minute or two and then fault F.23 came up again.
The pressure on the Pressure Gauge is 1.1 Bar so this looks fine.
I opened the screw on the face of the integral pump to check for any air in the pump but this appeared to be ok as well.
A second restart and the boiler appears now to be running again.
I think there is some kind of fault or issue here as the boiler has been
very reliable up until now. I have googled and found some comments on checking the expansion vessel - is this easy to do and is it easy to re-pressurise ? Could someone give me some advice please. I'm happy to call in a professional if required but if it's something handled very simply I would prefer to avoid the hassle and cost. I have plumbing experience - installed rads, pipework and a couple of boilers over the years but am NOT a professional plumber.
many thanks for any advice.
Pete
my boiler is a Vaillant ecoMax 622/2E, installed in 2004 by
a professional registered plumber. Faultless running up until now.
On 21st Dec it came up with a F.23 fault, reading service manual
this says
Meaning: Water level low
Temperature range too wide
Cause: Pump obstructed, pump running at lower capacity
Air in appliance, system pressure too low
flow and backflow NTC reversed.
On 21st Dec I drained and refilled, bleed system - water was very black
despite inhibitor. Boiler started and worked fine... until today (11th Jan).
Now have F.23 fault again. Restarted the boiler, ran for a minute or two and then fault F.23 came up again.
The pressure on the Pressure Gauge is 1.1 Bar so this looks fine.
I opened the screw on the face of the integral pump to check for any air in the pump but this appeared to be ok as well.
A second restart and the boiler appears now to be running again.
I think there is some kind of fault or issue here as the boiler has been
very reliable up until now. I have googled and found some comments on checking the expansion vessel - is this easy to do and is it easy to re-pressurise ? Could someone give me some advice please. I'm happy to call in a professional if required but if it's something handled very simply I would prefer to avoid the hassle and cost. I have plumbing experience - installed rads, pipework and a couple of boilers over the years but am NOT a professional plumber.
many thanks for any advice.
Pete